This puzzle:

Notepad: This puzzle's grid represents a sealed vault and its well-guarded surroundings. After completing the crossword, start in the upper-left corner and find a safe path to an important item. Then determine where to use this item to access the vault and its contents.

To enter the contest, identify the following 10 things: a) the name of the "important item," b) where to use it, c) seven hazards to avoid, and d) the contents of the vault. Each of these things is named by a single word.

When you have found the 10 words, send them in an e-mail to: crossword@nytimes.com. Fifty correct solvers, chosen at random, whose entries are received by 6 p.m. Eastern time on Tuesday, Oct. 23, will receive copies of The New York Times Sunday Crossword Puzzles 2013 Weekly Planner Calendar (Andrews McMeel). Only one entry per person, please. The answer grid will appear next week. The winners' names will appear in the issue of Nov. 4.